防止粉尘危害的法则规定,明确指出了必须戴防尘口罩的作业。在强调执行法则规定的同时,专家们还研究了防尘口罩有关结构与性能,提出了防尘口罩主体和使用者面部接触时,严密性容易检查的结构。一、选择防尘口罩时应注意的事项 1.作业场所粉尘的种类不同,选用防尘口罩等级不同,即使用二级防尘口罩,也要尽量选用阻尘效率95％以上的。如表1所 Rule of law to prevent dust hazards, clearly pointed out that the operation must wear a dust mask. While emphasizing the rules of enforcement, the experts also studied the structure and performance of the dustproof masks, and proposed the structure that the dustproof masks are easy to inspect when they are in contact with the user’s face. First, the choice of dust masks should pay attention to matters 1. The workplace dust of different types, the choice of dust masks at different levels, even with two dust masks, but also try to use more than 95% efficiency dust trap. As shown in Table 1